What is the purpose of enclosing the device lP / device ID object into square brackets in the JSON call Template?

A、 The request can hold multiple device IP/ device ID object as a list
B、 The square brackets and readability but are not mandatory
C、 The square brackets introduce an optional part of the request
D、 The device lP / device ld object is a nested object inside another one, with nesting requiring theUse of square brackets